Brief Description: C'sink spar flange holes and drill out tie down ho
Today I c'sunk the 6R6 screw holes in the front spar flange. The drawing says to open up the existing hole with # 28 drill but instead, I decided to use my #40 c'sink cutter attached to an extension and c'sunk the hole using cordless drill at a very slow speed.. I ran a screw in each nutplate to make sure the c'sink was deep enough. Worked better than expected.
I also drilled out the LW tie down hole to final size. I'll do the RW later when I have the RW tank off so I can access the inside to place a guard over the tie down so it doesn't get damaged while I drill from the outside.
